I'd say you need one high power incan, a good mid sized led light (18650/2xcr123s), a single cell EDC and a keychain light.
In those categories the following would be good:
1. Surefire M6 (cheap: Ultrafire W500 with WA1111)
2. Surefire U2, C2, LX2
3. HDS/RA (the Arc6 on the way should be good as well)
4. Ti preon I, Arc AAA etc.